/* ==========================================================================
   汉养师 · 熟制黄精 — 全局样式
   品牌色: 赭石棕 (#8B5A2B) + 朱砂红 (#A0331A) + 麦金 (#D4A574)
   字体: Noto Serif SC (标题) + Noto Sans SC (正文) + Inter (数字)
   ========================================================================== */

/* 字体 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600;700;900&family=Noto+Sans+SC:wght@300;400;500;600;700&family=Inter:wght@400;500;600&display=swap');

/* 设计令牌 (CSS 变量) */
:root {
  /* 品牌色 */
  --color-primary: #8B5A2B;        /* 赭石棕 */
  --color-primary-dark: #6B4220;
  --color-primary-light: #B07A4A;
  --color-accent: #A0331A;         /* 朱砂红 */
  --color-gold: #D4A574;           /* 麦金 */

  /* 背景 */
  --color-bg: #FAF7F2;             /* 米白 */
  --color-bg-card: #FFFFFF;
  --color-bg-dark: #2C1810;        /* 深棕黑(页脚) */
  --color-bg-section: #F5EFE6;     /* 浅米色区块 */

  /* 文字 */
  --color-text: #2C1810;
  --color-text-muted: #6B5D54;
  --color-text-light: #8C7E72;
  --color-text-invert: #FFFFFF;

  /* 功能色 */
  --color-success: #10B981;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-number: 'Inter', var(--font-sans);

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.04);
  --shadow-md: 0 4px 20px rgba(44, 24, 16, 0.06);
  --shadow-lg: 0 10px 40px rgba(44, 24, 16, 0.10);
  --shadow-glow: 0 0 30px rgba(139, 90, 43, 0.15);

  /* 容器 */
  --container-max: 1200px;
  --container-article: 720px;
  --container-padding: 1.25rem;

  /* 动效 */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* 重置 */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, picture, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--color-accent); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* 排版 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  letter-spacing: 0.02em;
}
h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.15rem; }
p { color: var(--color-text-muted); line-height: 1.8; }
.text-serif { font-family: var(--font-serif); }
.text-muted { color: var(--color-text-muted); }
.text-gold { color: var(--color-gold); }
.text-accent { color: var(--color-accent); }
.text-number { font-family: var(--font-number); }

/* 容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.container-article { max-width: var(--container-article); margin: 0 auto; padding: 0 var(--container-padding); }

/* Section */
section { padding: var(--space-3xl) 0; }
.section-title { text-align: center; margin-bottom: var(--space-2xl); }
.section-title h2 { margin-bottom: var(--space-sm); position: relative; display: inline-block; }
.section-title h2::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  margin: var(--space-sm) auto 0;
  border-radius: var(--radius-pill);
}
.section-title p { color: var(--color-text-muted); font-size: 1rem; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  text-align: center;
  line-height: 1.2;
  border: 2px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(139, 90, 43, 0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(139, 90, 43, 0.35);
}
.btn-accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, #7A2412 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(160, 51, 26, 0.25);
}
.btn-accent:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(160, 51, 26, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 1.1rem 2.25rem; font-size: 1.05rem; }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.9rem; }

/* 卡片 */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* 徽章/标签 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  background: var(--color-bg-section);
  color: var(--color-primary);
  border: 1px solid rgba(139, 90, 43, 0.15);
}
.badge-gold {
  background: linear-gradient(135deg, #F5E6CC, #E8D4A8);
  color: var(--color-primary-dark);
  border-color: var(--color-gold);
}

/* 渐入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(139, 90, 43, 0.08);
  transition: var(--transition-base);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-text);
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 2px 8px rgba(139, 90, 43, 0.25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem; color: var(--color-text); }
.brand-tagline { font-size: 0.7rem; color: var(--color-text-muted); letter-spacing: 0.1em; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  position: relative;
  transition: var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
}
.nav-cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: var(--transition-base);
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition-base);
}
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }
.menu-toggle.active span { background: transparent; }
.menu-toggle.active span::before { top: 0; transform: rotate(45deg); }
.menu-toggle.active span::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #F5EFE6 0%, #FAF7F2 60%, #FFFFFF 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(212, 165, 116, 0.25), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 90, 43, 0.10), transparent 50%);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
  width: 100%;
}
.hero-text { max-width: 600px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(139, 90, 43, 0.08);
  color: var(--color-primary);
  border: 1px solid rgba(139, 90, 43, 0.15);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-trust {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(139, 90, 43, 0.12);
}
.hero-trust-item { display: flex; flex-direction: column; }
.hero-trust-num {
  font-family: var(--font-number);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.hero-trust-label { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.25rem; }
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-image {
  width: 100%;
  max-width: 540px;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 30px 80px rgba(44, 24, 16, 0.18);
  border: 8px solid #fff;
  background: #fff;
}
.hero-badge {
  position: absolute;
  background: #fff;
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 500;
  animation: float 4s ease-in-out infinite;
}
.hero-badge-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.hero-badge-1 { top: 10%; right: -2%; }
.hero-badge-2 { bottom: 12%; left: -4%; animation-delay: 1.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ==========================================================================
   区块:四大优势 / 产品预览 / 工艺 / 信任 / 食用场景
   ========================================================================== */

/* 通用 section header */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-eyebrow {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--color-bg-section);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}
.section-header h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 0.75rem; }
.section-header p { max-width: 600px; margin: 0 auto; color: var(--color-text-muted); font-size: 1.05rem; }

/* 四大优势 grid */
.features {
  background: linear-gradient(180deg, var(--color-bg) 0%, #FFFFFF 100%);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(139, 90, 43, 0.08);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  transition: var(--transition-base);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(139, 90, 43, 0.2);
}
.feature-card:hover::before { width: 100px; }
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-serif);
  margin-bottom: 1.25rem;
  box-shadow: 0 6px 16px rgba(139, 90, 43, 0.25);
}
.feature-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.95rem; color: var(--color-text-muted); line-height: 1.7; }
.feature-stat {
  display: block;
  font-family: var(--font-number);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

/* 产品预览 (首页) */
.product-preview { background: var(--color-bg); }
.product-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
}
.product-preview-image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, #fff 0%, #F5EFE6 100%);
  padding: 2rem;
}
.product-preview-image img {
  width: 100%;
  border-radius: var(--radius-md);
}
.product-preview-text h2 { margin-bottom: 1rem; }
.product-preview-text ul {
  margin: 1.5rem 0 2rem;
}
.product-preview-text li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0;
  color: var(--color-text);
}
.product-preview-text li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05em;
}

/* 工艺 (首页) */
.process-section {
  background: linear-gradient(135deg, #F5EFE6 0%, #FAF7F2 100%);
}
.process-image {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* 真假对比 */
.compare-section { background: #fff; }
.compare-image {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* 食用场景 (lifestyle) */
.lifestyle-section {
  background: linear-gradient(135deg, #2C1810 0%, #4A2D1C 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.lifestyle-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(212, 165, 116, 0.15), transparent 60%);
}
.lifestyle-section .section-header h2,
.lifestyle-section .section-header p { color: #fff; }
.lifestyle-section .section-eyebrow {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-gold);
}
.lifestyle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.lifestyle-text h3 { color: var(--color-gold); font-size: 1.8rem; margin-bottom: 1rem; }
.lifestyle-text p { color: rgba(255, 255, 255, 0.85); margin-bottom: 1rem; }
.lifestyle-image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* 信任/购物保障 (CTA strip) */
.trust-strip {
  background: #fff;
  border-top: 1px solid rgba(139, 90, 43, 0.08);
  border-bottom: 1px solid rgba(139, 90, 43, 0.08);
  padding: 2rem 0;
}
.trust-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}
.trust-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-weight: 500;
}
.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-section);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.trust-item p { color: var(--color-text); font-size: 0.95rem; }
.trust-item small { display: block; color: var(--color-text-muted); font-size: 0.8rem; font-weight: 400; margin-top: 0.15rem; }

/* 购买入口 */
.purchase-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.purchase-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(212, 165, 116, 0.2), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(160, 51, 26, 0.2), transparent 50%);
}
.purchase-cta-inner { position: relative; z-index: 1; }
.purchase-cta h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.75rem; }
.purchase-cta p { color: rgba(255, 255, 255, 0.85); margin-bottom: 2rem; font-size: 1.05rem; }
.purchase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}
.purchase-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  transition: var(--transition-base);
  text-decoration: none;
  color: #fff;
  display: block;
}
.purchase-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.purchase-card-logo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.purchase-card h3 { color: #fff; font-size: 1.2rem; margin-bottom: 0.4rem; }
.purchase-card p { color: rgba(255, 255, 255, 0.8); font-size: 0.9rem; margin: 0; }
.purchase-card-cta { display: inline-block; margin-top: 0.75rem; font-size: 0.85rem; opacity: 0.9; }

/* 文章精选 (首页) */
.articles-section { background: var(--color-bg); }
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.article-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  color: inherit;
}
.article-card-image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  background: var(--color-bg-section);
}
.article-card-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.article-card-cat {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.article-card h3 {
  font-size: 1.1rem;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}
.article-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}
.article-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-light);
  padding-top: 0.75rem;
  border-top: 1px solid rgba(139, 90, 43, 0.08);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand .brand-name { color: #fff; font-size: 1.25rem; }
.footer-brand p { color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; margin-top: 0.75rem; line-height: 1.7; }
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}
.footer-col a:hover { color: var(--color-gold); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}
.footer-contact-item .icon {
  color: var(--color-gold);
  flex-shrink: 0;
  margin-top: 0.15em;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}
.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-icp {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
}
.footer-icp a {
  color: rgba(255, 255, 255, 0.6);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition-fast);
}
.footer-icp a:hover { color: var(--color-gold); }
.footer-icp .icp-icon {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: #d9534f;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.footer-icp .icp-icon::before {
  content: '⚖';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #fff;
  line-height: 1;
}
.footer-icp .icp-police {
  color: rgba(255, 255, 255, 0.6);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   通用页面组件
   ========================================================================== */

/* 面包屑 */
.breadcrumb {
  padding: 1.5rem 0 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { margin: 0 0.5rem; color: var(--color-text-light); }
.breadcrumb-current { color: var(--color-text); }

/* 页面 hero (子页面) */
.page-hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(135deg, #F5EFE6 0%, #FAF7F2 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(212, 165, 116, 0.18), transparent 60%);
}
.page-hero-inner { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 0.75rem; }
.page-hero p,
.page-hero .page-hero-title,
.page-hero .page-hero-sub { color: var(--color-text-muted); max-width: 600px; margin: 0 auto; }
.page-hero .page-hero-title { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 700; font-family: var(--font-serif); color: var(--color-text); margin-bottom: 0.75rem; }
.page-hero .page-hero-sub { font-size: 1.1rem; margin-top: 0.5rem; }

/* 产品详情 (product.html) */
.product-detail { padding: 3rem 0; }
.product-detail-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: flex-start;
}
.product-gallery-main {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
}
.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.product-gallery-thumb {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 2px solid transparent;
  padding: 0.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
}
.product-gallery-thumb.active,
.product-gallery-thumb:hover {
  border-color: var(--color-primary);
}
.product-info h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.product-info .product-sub { color: var(--color-text-muted); margin-bottom: 1.5rem; }
.product-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(139, 90, 43, 0.1);
  border-bottom: 1px solid rgba(139, 90, 43, 0.1);
  margin-bottom: 1.5rem;
}
.product-price {
  font-family: var(--font-number);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}
.product-price-unit { color: var(--color-text-muted); font-size: 0.95rem; }
.product-spec-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 1rem;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.product-spec-list dt { color: var(--color-text-muted); }
.product-spec-list dd { color: var(--color-text); }
.product-cta-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
@media (max-width: 540px) {
  .product-cta-row { grid-template-columns: 1fr; }
}

/* 营养成分表 */
.nutrition-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.nutrition-table th,
.nutrition-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(139, 90, 43, 0.08);
  font-size: 0.95rem;
}
.nutrition-table th {
  background: var(--color-bg-section);
  color: var(--color-primary);
  font-weight: 600;
}
.nutrition-table td:last-child { text-align: right; color: var(--color-text-muted); }
.nutrition-table tr:last-child td { border-bottom: none; }

/* 食用方法 */
.eat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.eat-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(139, 90, 43, 0.06);
}
.eat-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.eat-card h4 { margin-bottom: 0.5rem; }
.eat-card p { font-size: 0.9rem; color: var(--color-text-muted); }

/* 资质卡片 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.cert-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.cert-card-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--color-bg-section);
  display: block;
}
.cert-card-body { padding: 1.25rem; }
.cert-card h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.cert-card p { font-size: 0.9rem; color: var(--color-text-muted); }
.cert-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-bg-section), #fff);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.95rem;
  flex-direction: column;
  gap: 0.5rem;
}

/* 适用人群 (list with check/cross) */
.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.audience-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.audience-card h4 { margin-bottom: 1rem; }
.audience-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.4rem 0;
  color: var(--color-text);
}
.audience-ok li::before { content: '✓'; color: var(--color-success); font-weight: 700; flex-shrink: 0; }
.audience-no li::before { content: '✗'; color: var(--color-danger); font-weight: 700; flex-shrink: 0; }

/* 购买渠道 */
.channel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: stretch;  /* 两卡片强制等高 */
}
@media (max-width: 640px) {
  .channel-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

/* === 渠道卡片(淘宝/抖音)— 双店等高、内部垂直对齐 === */
.channel-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 2px solid transparent;
  transition: var(--transition-base);
  /* 关键:flex column 让两卡片等高后,内部元素垂直对齐 */
  display: flex;
  flex-direction: column;
  align-items: center;  /* 子元素水平居中 */
}
.channel-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}
.channel-card-logo {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-serif);
  flex-shrink: 0;
}
.channel-card.taobao .channel-card-logo { background: linear-gradient(135deg, #FF6A00, #FF9500); }
.channel-card.douyin .channel-card-logo { background: linear-gradient(135deg, #161823, #FE2C55); }
.channel-card h3 {
  font-size: 1.3rem;
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  line-height: 1.4;
}
.channel-card > p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
  word-break: keep-all;  /* 店名长不要奇怪断字 */
  max-width: 100%;
}

/* QR 图统一容器 — 两卡片同尺寸 */
.channel-card .channel-qr-img {
  display: block;
  width: 160px;
  height: 160px;
  margin: 0 auto 1.25rem;
  border-radius: var(--radius-sm);
  object-fit: contain;
  background: #fff;
  padding: 4px;
  border: 1px solid rgba(139, 90, 43, 0.1);
  flex-shrink: 0;
}

/* 旧占位 .channel-qr 的兜底(默认 display:none,只作 fallback) */
.channel-qr {
  width: 160px;
  height: 160px;
  margin: 0 auto 1.25rem;
  background: var(--color-bg-section);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border: 2px dashed var(--color-primary-light);
}
.channel-qr img { width: 100%; height: 100%; object-fit: contain; border-radius: var(--radius-sm); }

/* 卡片 CTA 按钮(<a> 与 <button> 统一)— 100% 宽、统一字号 */
.channel-card .btn,
.channel-card button.btn {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.85rem 1.5rem;
  font-size: 0.95rem;
  border: none;  /* button 默认边框去掉 */
  margin-top: 0;
}
.channel-card > a.btn { margin-top: 1rem; }
.channel-card > button.btn { margin-top: 1rem; }

/* meta 块 — 始终沉到卡片底部,使两卡片底部对齐 */
.channel-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: auto;  /* 关键:推到卡片最底部 */
  padding-top: 1rem;
  width: 100%;
  text-align: center;
}
.channel-meta details { text-align: left; }
.channel-meta summary {
  cursor: pointer;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-family: inherit;
}
.channel-meta summary:hover { color: var(--color-primary-dark); }
.channel-code-block {
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-family: ui-monospace, "SFMono-Regular", "Menlo", monospace;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  word-break: break-all;
  line-height: 1.55;
  border: 1px solid rgba(139, 90, 43, 0.12);
}
.channel-code-block strong { color: var(--color-primary); font-weight: 600; }

/* 购买流程 */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.flow-step {
  text-align: center;
  position: relative;
}
.flow-step::after {
  content: '→';
  position: absolute;
  right: -0.95rem;
  top: 28px;
  font-size: 1.5rem;
  color: var(--color-primary-light);
}
.flow-step:last-child::after { display: none; }
.flow-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-number);
  margin-bottom: 0.75rem;
  box-shadow: 0 4px 12px rgba(139, 90, 43, 0.3);
}
.flow-step h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.flow-step p { font-size: 0.9rem; color: var(--color-text-muted); }

/* 联系 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2.5rem;
  align-items: flex-start;
}
.contact-info {
  background: linear-gradient(135deg, var(--color-bg-section), #fff);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.contact-info h2 { font-size: 1.5rem; margin-bottom: 1.5rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(139, 90, 43, 0.08);
}
.contact-item:last-child { border-bottom: none; }
.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.contact-item-body { flex: 1; }
.contact-item-body small {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}
.contact-item-body strong {
  display: block;
  color: var(--color-text);
  font-size: 1.05rem;
  font-weight: 500;
  font-family: var(--font-number);
}
.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}
.contact-form h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.contact-form p { color: var(--color-text-muted); margin-bottom: 1.5rem; font-size: 0.95rem; }
.form-row { margin-bottom: 1rem; }
.form-row label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1.5px solid rgba(139, 90, 43, 0.15);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  transition: var(--transition-fast);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}
.form-row textarea { min-height: 120px; resize: vertical; }
.form-row .btn { width: 100%; margin-top: 0.5rem; }

/* 文章列表 (articles.html) */
.articles-list { padding: 3rem 0 5rem; }
.articles-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(139, 90, 43, 0.1);
}
.articles-count { color: var(--color-text-muted); font-size: 0.95rem; }
.articles-count strong { color: var(--color-primary); font-family: var(--font-number); font-size: 1.1rem; }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.articles-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
}

/* 引用/小贴士 */
.tip-box {
  background: linear-gradient(135deg, #FFF7E6 0%, #F5EFE6 100%);
  border-left: 4px solid var(--color-gold);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
}
.tip-box h4 { color: var(--color-primary); margin-bottom: 0.4rem; }
.tip-box p:last-child { margin-bottom: 0; color: var(--color-text); }

/* 分隔线 */
.divider { height: 1px; background: rgba(139, 90, 43, 0.12); margin: 2rem 0; border: none; }

/* ==========================================================================
   FAQ 常见问题(GEO 优化)
   ========================================================================== */
.faq-section { background: var(--color-bg); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid rgba(139, 90, 43, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  transition: var(--transition-base);
  overflow: hidden;
}
.faq-item:hover { border-color: rgba(139, 90, 43, 0.25); box-shadow: var(--shadow-sm); }
.faq-item summary {
  padding: 1.1rem 1.5rem;
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: var(--transition-fast);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: var(--transition-base);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-section);
}
.faq-item[open] summary { color: var(--color-primary); }
.faq-item[open] summary::after { content: '−'; background: var(--color-primary); color: #fff; }
.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}
.faq-answer p:last-child { margin-bottom: 0; }

/* HowTo 步骤 */
.howto-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}
.howto-steps li {
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 4rem;
  background: #fff;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(139, 90, 43, 0.08);
  counter-increment: step;
  min-height: 60px;
}
.howto-steps li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1.25rem;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-number);
  font-size: 1rem;
}
.howto-steps li strong { display: block; margin-bottom: 0.25rem; color: var(--color-text); }
.howto-steps li span { color: var(--color-text-muted); font-size: 0.95rem; }